Permutation-padlock.



Patented Apr. 28, 1914.

2 SHEETS-SHEET 1;

J. B. MGGHESNEY. PERM UTATION PADLOGK. APPLICATION FILED JUNE 27, 1912.

1 O94 735. Patented Apr. 28, 1914.

2 SHEETS-QEEET 2.

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' wvwvtdz J13 M C/2052 c AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA c4 JAMES B. MoCI-IESNEY, OF ST. LOUIS, MISSOURI.

PERMUTATION-PADLOCK.

Application filed .Fune 27, 1912.

To (.1727 1.0710112 it may concern Be it known that 1, JAMES B. MoCHnsxnr, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improve- Specification of Letters Patent.

ments in Permutation-Padlocks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to locks, and more particularly to permutation padlocks, and has for its object to provide a permutation lock of this type which will be extremely simple in construction, efficient in operation, and durable in use.

An important object is to provide a method of assembling the device which will be extremely economical.

A further object is to provide novel means for holding a shackle member in the casing.

Other objects and advantages will be apparent from the following description, and it will be understood that changes in the specific structure shown and described may be made within the scope of the claim without departing from the spirit of the invention.

In the drawings: Figure 1 is a longitudinal sectional view of the device. Fig. 2 is a cross sectional view thereof, on the line of Fig. 1. Fig. 3 is a. similar view on the line of Fig. 1. Fig. 1 is a perspective view of the lock with part of the casing broken away. Fig. 5 is a bottom plan view.

Referring to the drawings, there is shown a casing comprising the continuous wall portion 10 circular in cross section and having the integrally formed head portion 11 provided with the tumbler shaft socket 12 receiving the inner extremity of a tumbler shaft 13 provided with the supporting shoulder ll upon which there is revolubly disposed the tumbler member 15 having the concentric segmental groove 1.6 therein, receiving a longitudinally projecting pin 17 carried upon the shoulder 14: and arranged to engage the opposite ends of the recess 16 for rotation of the tumbler at times, as will be readily understood and subsequently explained.

Carried upon the tumbler shaft 13,

Patented Apr. 28, 191 1.

Serial no. 706.241.

formed of a size similar to that of the tumbler 15, and arranged parallel therewith. The tumblers fit snugly in a cylindrical passage 19 formed in the casing 10, and are provided with oppositely disposed notches 20 arranged to receive slidaloly therethrough the opposite arms of the shackle 9.1 slidable in guide channels formed at opposite sides of the channel 19 in the casing 10. The guide channels communicate with suitable openings forn'ed through the head 11, whereby the shackle may be inserted therethro-ugh. The opposite arms of the shackle are provided with spaced notches 24 arranged to receive the peripheral portions of the tumblers therein at times, to be held against detachment from the casing. The tumbler 15 is provided with a peripheral groove 24 in which operates a. bow spring 25, adapted to bear against the sides of the channel 19, to yieldably hold the tumbler against rotation.

The lower end of the tumbler shaft 13 is provided with a shoulder 26 beyond which extends a tenon 27 projected through a suitable retaining plate 28 secured in the end of the passage 19, in a-ny customary method, the outer extremity of the tenon being secured in a dial plate 29 having a knurled edge, by means of which the tumbler shaft 13 is rotated for operation of the lock. Secured to the side of the casing adjacent the periphery of the dial plate 29 there is a pointer 30 and the dial plate is provided with suitable figures and radial division marks. It will be seen that upon rotation of the dial plate 29, the pin 17 will engage one edge of the slot 16 after a certain degree of movement, rotating the tumbler 15 until the notches 20 therein are disposed in registry saith the notches 2% formed in the arms of the shackle, after which the spring holds the said tumbler against reverse movement, whereupon the shaft 13 is rotated reversely to cause registry of the notches in the tumbler 18 with the notches 2d of the shackle arms and grooves of the casing, after which the shackle may be easily inserted or removed as the occasion may require. The shackle is provided with a long arm A and a short arm B, the arm A having a longitudinally extending groove 31, in its outer side, communicating with a peripheral. groove 32 formed in the long arm adjacent its extremity. Projected through there is an integral tumbler member 18 l the adjacent portion of the casing and into mun-Isl the groove there is a pin or screw member I engaging in the groove 31, and arranged rided with a central tumbler shaft socket said casing having opposed grooves in its sides and comimnncating o 'ienings through the head, a shackle member slidable throutzh, the openings and grooves, a tumbler shaft seated rerolubly in said socket, and carrying; intermediatelv thereof an inte 'ral tumbler member having opposed notches arranged to receive the shackle arms therein a morass at times, said shaft having a shoulder thereon, and a second tumbler revolubly sup ported thereon, and having similarly epposed notches, a pin carried upon the shoulder, said tumbler having a segmental recess therein receiving said pin for operation of the tumbler upon rotation of the shaft, fric tional means for resisting movement of said tumbler, said shaft having a shoulder thereon adjacent its outer end a retaining plate engaged. over the shaft and against the shoulder secured in the outer end of said cylindrical passage said shaft projecting tlieretln'ouglL and an. operating dial coengaged with the projecting end of the shaft. as and for the purpose described.

In testimony whereof, I aflix my signature, in presence of two Witnesses.

JAB ES B. hloCHESNlGY. llitnesses M. J. CARROLL, F. E. CARROLL,

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. 0. 

